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A Different Form of Color Vision in Mantis Shrimp

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Science  24 Jan 2014:
Vol. 343, Issue 6169, pp. 411-413
DOI: 10.1126/science.1245824

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  1. Fig. 1 (A) Spectral sensitivities of H. trispinosa.

    Spectral sensitivity curves obtained from intracellular electrophysiological recordings. The figure shows smoothed data (four neighbors on each side, second-order polynomial), normalized to 100% (see table S1). (B) Eye of H. trispinosa. Showing the dorsal hemisphere (DH) and ventral hemisphere (VH), divided by the midband (MB) containing the color receptors in the four top rows (CV).

  2. Fig. 2 Examples of correct choice data from a two-way choice test of H. trispinosa.

    Curves are plotted as mean ± SEM. The horizontal dashed lines indicate the 50% (chance) and 60% (discrimination) criteria. (A) Choices of animals trained to 470 nm (n = 7) and tested toward longer wavelengths. (C) Choices of animals trained to 570 nm (n = 4) and tested toward shorter wavelengths. The number above each point indicates the tested wavelength interval. (B and D) Examples of animals making a choice.

  3. Fig. 3 Spectral discrimination curves (Δλ/λ).

    The spectral discrimination curve from behavioral testing of H. trispinosa is shown by a thick black line, and the modeled spectral discrimination curve is shown by a thick dashed line. [The figure is modified from Koshitaka et al. (20).]

  4. Fig. 4 Proposed processing mechanism.

    (A) Idealized spectral reflectance from stomatopod body parts. WL, wavelength. (B) Spectral sensitivities throughout the spectrum divided into separate bins. (C and D) Excitation patterns of each spectral sensitivity when looking at the blue (C) and red (D) reflectance spectra.